Sometimes we use the Amethyst Devs chat, others on GitHub issues themselves, sometimes on DMs. There is not a big risk of people doing double work. DVMs for instance could only come from me or nostr:nprofile1qyg8wumn8ghj7mn0wd68ytnddakj7qgwwaehxw309ahx7uewd3hkctcpzfmhxue69uhkummnw3eryvfwvdhk6tcqyzvmk4v3eygkvq8cg5g86v0ekk0z7lr7pxsllqpwsncag0d92l9xgscee3m and nostr:nprofile1qyghwumn8ghj7vf5xqhxvdm69e5k7tcpzfmhxue69uhkummnw3eryvfwvdhk6tcpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsqgyehd2erjg3vcq0s3gs05clndv79a78uzdpl7qzap836s762472vsstfjjc is not currently coding anything on Amethyst so you can go for it :)